Water softener



FIG. 1 is a perspective view of a water softener showing my new design

FIG. 2 is a front view thereof

FIG. 3 is a rear view thereof

FIG. 4 is a left side view thereof

FIG. 5 is a right side view thereof

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom view thereof. 

The ornamental design for a water softener, as shown and described. 